Screening device



Jan. 6, 1931. L. E. RICE SCREENING DEVICE Filed Oct. 15. 1928 2Sheets-Sheet 1 /z fi ATTOR N EY- Jan. 6, 1931. L. E. RICE SCREENINGDEVICE Filed Oct. 15, 1928 2 SheetS-Sheet 2 lazi?? E Rm ATTORNEYPatented Jan; 6, 1931 l ATEs LUTEM EDwRfimomoFAo nom; i'

son-'emitim VC This; inventon felat'es to mprovements in screeningdevces and t's general' object is to provde 'a devce for Vbratmg ascreen 'in em extremelyrapid I'nanner to prevent me, w'teral fromstickng the'eto,` with the result the' sc reencan be kept in arela'tvely- 'clean condition at all times and thereby ex edi- 'tiouslyand" effic'iently perform a screening `fimton.

10 Another object of the nve'nton is to 'pro-. videa vbrztory screeningdevce that will yibrate a eci-ecnin e vertical plane, and will notin anyway damalge the screen or the vibrating means threfor, which scons'tructed sothat: it; will efioently operte,

'for a p'olonged period of tme 'with minimuni repairs and upkeep.

' 'Another 'object of the 'nvent on is toprovide' e vibmtory screeningdeVcethats manufacture e i r This 'inventio 'also consists in certainother-features -of Construction and in` the combinationand .arra ngementof the several parts, to 'be hereinaftefuily described, il-

l'ustrated in the accompanyng 'drawngs `and Speccally pointed clajims. rv i In desribng my liventon in detal, refout the appended fied form ofmy' devce and *showing pafts thereofn section.

, Figure s a vertical sectional View show- -ihg'the eccjentrc means" forthe 'form of my invention age shown inFgure't. e

Figure 6 is a dettl View of the eccentrc meens per se.: A i i Figure'Tis a similar View of a. modified :form of Screen tapping means.

;15 'Figura '8 .a pe'spective View of the rocke'ren'ce Will be had totheaccompanyng draw- -e e hamm hwhich forme e art of them meSw' 3, 't

lte t rrin to hed awn s mee, it will -beno'ted that provdea supportingframe which includes p'ra'llel 'channel bars 1. having rsing therefroniangl e-bmcket 2 which ;sup-

porten& htve secred'to their upper ende -a chenrel bar'. 3 a-ranged 'tobridge th 'chany nel bars l'eesuggestedin Fgure 4. 2

- Mounte'l'ponndeecured to thechannl bar a adjacc t oneend there f ismotor 4 having connectedto the rmature shaft thereof and arrengeclalignment therewith ;t' hft 5.: v

- The'shaft' is eecured tothe armet reehaft i through the medium of acoupling & and :is

armged through and supported byapproea'chother" and s cure'd to the'channel bar 3 as best :shown inFigure 2; The bearngs 7 Hevice'WiI-I notd'amage 'the motor; The free nd ofthesha'ft `5is redueed and terminatesihafnfeocentrioally disposed pro ct wg which has Secured theret'o an`a`nt`i friction hearing 9 through the medium i of *a Washer andigc wbolt as best 'shown in Fgui'e' 3. r

Secured to the ant-friction hearing isa 'sectionl housing 10 havingextending therefrm a relatively flat arm 11* ;which ha Secured theeto'th bifu'rcated upp'erend of a 'connect- 'ing rod12." The lowereidjof theconnecting i the arms 13 thereof regsterng vertially dis- .InFguresl t j trted a modified form of eccentr means an for the purposesof dstnctioi, the shaft which is Secured to the armature shaft ofthemotor through the medium, of the coupling 6,

is indicate& by; the reference numeral l and also passes thi ough&hearing similar' tolthe bearng Howeverg the Shaft 15 sgof the samediameter throughout its length; and fixed; to its freeendby asleeve 16is a guide :housing 17 whch hits arranged for vertical V 6 iicl'u'siiver have in s-p ari electrc r ag ingrod'similar-to the 'rocl 12. i

fi ed-thereto' wire cloth 25 and cooperating i 7 bore of the block 18 isa screw 20 having one i end swiveled in the bottom of the guide housingwhile its oppositeend extends through the e top thereof and is providedwith a head for receiving a wrench or the like whereby the block 18 canbe adjustedaswill be app arent.

A lock nut 21 'is mounted onithe screw 20 for:

retaining the block 'in its adjusted position..

15 u ng similar to the bearng 9,-and carred by 'the hearing of thebear-ing 'stud 22 is a sectional housing having -anf arm dependingthe'refrom which likewi'se ,receives' a connect In the form ofhe'invention just described, u namely as shown inFiguresA to -6, itwillbe obvious that' due to the fact the b1 ok418 is adjustably mounted,the 'stud 22 can be adjusted to any desired positioniwith respect to theshaft 15 to vary' the eccentric position with respect 'theretoaccording1y,hwhile in the form i asjshown in Figures 1 to 3 inclusive,the ec- .centrcis non-ad ustable.

aresupportedzupon the lower horizontal poraccord inglythrough the-mediumof bolts 24: having theirheads'countersunk in the strips ;as bestshownin Figurel The strips have with the b0lts24 are nit 26. p e i ;Securedtothe wire cloth and arranged in a superposed relation with respect to'each other uponopposite sides of the cloth are clamping gmeansincludingwood strips 27 which have fixedsthereto by bolt and nutconnections 28 and a plate 29 a bracket 130 having'rising therefrom a.lug 31formed with an opening for-receiving the bolt 32 which likewiseis received bythe Slots 14: wherebythe bracket is securedto. aconnecting rod 12 {with the 'result when the motor is put intooperation, the screen 'will be vibrated ina mannerwhereby "the movement'thereof' 'will be' in' a vertical plane'. I f se h i 'In order toassistinretaining the wire cloth 'i'n'a 'clean' condition, I provide 'atapping means which includes a bar 33 `mounted forc The screen frameincludes strips 23 which operation, the plate will *engage the bolt 36and cause'the 'bar 33 to reciprocate on the bolts 24 and thereby thebolt 36 will set up the hammern'g action against the plate.

;In Figures 7 'and SjIjhave; illustrated a modified :form of cleaningmeans and in this form I provideasubstantially U-shape rock-` 75 ing armmounted 'for rocking movement midwayits ends toan apertured ear 38 whichFormed with the block and extending cen-` trally from its outerfacethereof isa bearng stud 22 which receivesan anti friction bear- [theear, the lower endgof a connect-ing' rod 39.,

while the opposite end of the rodis pivoted to the eccentricstud of theshaft 5. Theupper strip ;27 has Secured thereto and ar: 535 ranged inthe path ofthe ;endsof .the U-shape rocking arm 37', blocks 40. By thisconstruc tion, the wire cloth will be vibrated by. the

connection of therocking arm-with the ,shaft 5,and the rocking arm willalso setmp 'a 'hanmering action uponthecloth From the aboveidescript on,and dim r sure of the drawings it will be obvious that I have provided ascreeningdevicethat may be'used for screening any granular materiah ps Eand performs-its intended function in minitions 'of the channel ;barsland held thereon mum time and with` maximum efiiciency.=`

It is thought from the foregoingdescription that the advantages and'novel features of my invention will be readily apparent, i 300 I desireit to be understooodathat .l may .make changes in the 'Construction andinthe *coil springs surrounding. said bolts; and

yieldablysupporting said bar, impact means 5 Secured to said bar andrising therefrom, means connectedwith the vertical reciprocating meansand the screening means'respectively and being arranged in the path ofthe impact .means whereby a hammeringac- (3120 tion is imparted to saidscreening means.

2. In a screening device, a 'supporting frame, a screening means, aframe forsaid screening means, bolts for securing the screeningmeans'rame to* the suporting frame and eXtending below. the supportingframe, a bar mountedor slidable movement on said' bolts, nuts Secured tosaid bolts coil springs surrounding the ,bolts ,and ?having theendconvulutions engaging the bar and'so the nut s respectively foryieldably supporting said bar, vertcally reciprocatig means for saidscreening means clamping means Secured to said scfeening 'means and thevertically 'ecprocating 'means respectively, impact means carried bysaid bar and includng a bolt arranged in'the path of the clamping meanswhereby a hammerng' acton is mparted' to the screening* means.

In testmpny whereof I aflix mysignature. V LUTHER EDWARD RICE.

